mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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182840a50d
Original commit message from CVS: 2006-04-07 Andy Wingo <wingo@pobox.com> * gst/gstelement.override (_wrap_gst_element_link): Allow errors parsing the optional filter caps to propagate up.
492 lines
14 KiB
C
492 lines
14 KiB
C
/* -*- Mode: C; c-basic-offset: 8 -*- */
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/* gst-python
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* Copyright (C) 2005 Johan Dahlin
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* Author: Johan Dahlin <johan@gnome.org>
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*/
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%%
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ignore
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gst_element_get
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gst_element_set
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gst_element_get_property
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gst_element_set_property
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%%
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override gst_element_get_pad_template args
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static PyObject *
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_wrap_gst_element_get_pad_template(PyGObject *self, PyObject *args)
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{
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PyObject *ret;
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gchar *name;
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GstPadTemplate *tmpl;
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if (!PyArg_ParseTuple(args, "s:GstElement.get_pad_template", &name))
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return NULL;
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tmpl = gst_element_class_get_pad_template
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(GST_ELEMENT_GET_CLASS (self->obj), name);
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if (tmpl) {
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ret = pygstobject_new (G_OBJECT (tmpl));
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} else {
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ret = Py_None;
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Py_INCREF (ret);
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}
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return ret;
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}
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%%
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override gst_element_set_state kwargs
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static PyObject *
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_wrap_gst_element_set_state(PyGObject *self, PyObject *args, PyObject *kwargs)
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{
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static char *kwlist[] = { "state", NULL };
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PyObject *py_state = NULL;
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GstState state;
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gint ret;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O:GstElement.set_state", kwlist, &py_state))
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return NULL;
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if (pyg_enum_get_value(GST_TYPE_STATE, py_state, (gint *)&state))
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return NULL;
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pyg_begin_allow_threads;
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ret = gst_element_set_state(GST_ELEMENT(self->obj), state);
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pyg_end_allow_threads;
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return pyg_enum_from_gtype(GST_TYPE_STATE_CHANGE_RETURN, ret);
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}
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%%
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override gst_element_get_state kwargs
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static PyObject *
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_wrap_gst_element_get_state(PyGObject *self, PyObject *args, PyObject *kwargs)
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{
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static char *kwlist[] = { "timeout", NULL };
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GstState state;
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GstState pending;
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GstStateChangeReturn ret;
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GstClockTime timeout = GST_CLOCK_TIME_NONE;
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PyObject *tuple;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs,
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"|K:GstElement.get_state", kwlist,
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&timeout)) {
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PyErr_SetString(PyExc_RuntimeError, "Timeout not specified correctly");
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return NULL;
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}
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pyg_begin_allow_threads;
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ret = gst_element_get_state(GST_ELEMENT (self->obj), &state, &pending,
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timeout);
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pyg_end_allow_threads;
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tuple = Py_BuildValue("OOO",
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pyg_enum_from_gtype (GST_TYPE_STATE_CHANGE_RETURN, ret),
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pyg_enum_from_gtype (GST_TYPE_STATE, state),
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pyg_enum_from_gtype (GST_TYPE_STATE, pending));
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return tuple;
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}
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%%
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override gst_element_link_many args
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static PyObject *
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_wrap_gst_element_link_many(PyObject *self, PyObject *args)
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{
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PyGObject *element, *element2;
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int i, len;
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len = PyTuple_Size(args);
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if (len < 2)
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{
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PyErr_SetString(PyExc_TypeError, "gst.element_link_many requires at least two argument");
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return NULL;
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}
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for (i = 0; i < len; i++)
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{
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element = (PyGObject*)PyTuple_GetItem(args, i);
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if (!pygobject_check(element, &PyGstElement_Type))
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{
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PyErr_SetString(PyExc_TypeError, "argument must be a GstElement");
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return NULL;
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}
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}
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/* Mimic the real gst_element_link_many */
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element = (PyGObject*)PyTuple_GetItem(args, 0);
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element2 = (PyGObject*)PyTuple_GetItem(args, 1);
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i = 2;
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while (1) {
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if (!gst_element_link(GST_ELEMENT(element->obj),
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GST_ELEMENT(element2->obj)))
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{
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PyErr_Format(PyGstExc_LinkError,
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"failed to link %s with %s",
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GST_ELEMENT_NAME(element->obj),
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GST_ELEMENT_NAME(element2->obj));
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return NULL;
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}
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if (i >= len)
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break;
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element = element2;
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element2 = (PyGObject*)PyTuple_GetItem(args, i);
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i++;
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}
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Py_INCREF(Py_True);
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return Py_True;
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}
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%%
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override gst_element_link kwargs
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static PyObject *
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_wrap_gst_element_link(PyGObject *self, PyObject *args, PyObject *kwargs)
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{
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static char *kwlist[] = { "dest", "filtercaps", NULL };
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PyGObject *dest;
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PyObject *py_caps = NULL;
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int ret;
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GstCaps *caps = NULL;
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gboolean caps_is_copy;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O!|O:GstElement.link",
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kwlist, &PyGstElement_Type, &dest, &py_caps))
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return NULL;
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if (py_caps == NULL)
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caps = NULL;
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else {
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caps = pygst_caps_from_pyobject (py_caps, &caps_is_copy);
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if (caps == NULL)
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/* an error happened, propagate up */
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return NULL;
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}
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ret = gst_element_link_filtered(GST_ELEMENT(self->obj), GST_ELEMENT(dest->obj), caps);
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if (caps && caps_is_copy)
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gst_caps_unref (caps);
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if (!ret) {
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PyErr_Format(PyGstExc_LinkError,
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"failed to link %s with %s",
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GST_ELEMENT_NAME(self->obj),
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GST_ELEMENT_NAME(dest->obj));
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return NULL;
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}
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return PyBool_FromLong(ret);
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}
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%%
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override gst_element_link_filtered kwargs
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static PyObject *
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_wrap_gst_element_link_filtered(PyGObject *self, PyObject *args,
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PyObject *kwargs)
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{
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if (PyErr_Warn(PyExc_DeprecationWarning, "element.link_filtered is deprecated, use element.link") < 0)
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return NULL;
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return _wrap_gst_element_link (self, args, kwargs);
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}
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%%
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override gst_element_link_pads kwargs
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static gboolean
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pad_name_from_object (PyObject *object, const gchar **name)
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{
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if (object == Py_None) {
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*name = NULL;
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return TRUE;
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} else if (PyString_Check (object)) {
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*name = PyString_AsString (object);
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return TRUE;
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} else if (pygobject_check (object, &PyGstPad_Type)) {
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*name = gst_object_get_name (GST_OBJECT (pygobject_get (object)));
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return TRUE;
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}
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PyErr_SetString(PyExc_TypeError, "argument could not be converted to a pad");
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return FALSE;
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}
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static PyObject *
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_wrap_gst_element_link_pads(PyGObject *self, PyObject *args, PyObject *kwargs)
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{
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static char *kwlist[] = { "srcpadname", "dest", "destpadname", NULL };
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const char *srcpadname, *destpadname;
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PyGObject *dest;
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PyObject *srcpad, *destpad;
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int ret;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs,
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"OO!O:GstElement.link_pads", kwlist,
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&srcpad, &PyGstElement_Type, &dest,
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&destpad))
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return NULL;
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if (!pad_name_from_object (srcpad, &srcpadname) ||
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!pad_name_from_object (destpad, &destpadname))
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return NULL;
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ret = gst_element_link_pads(GST_ELEMENT(self->obj), srcpadname,
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GST_ELEMENT(dest->obj), destpadname);
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if (!ret) {
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PyErr_SetString(PyGstExc_LinkError, "link failed");
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return NULL;
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}
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return PyBool_FromLong(ret);
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}
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%%
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override gst_element_link_pads_filtered kwargs
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static PyObject *
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_wrap_gst_element_link_pads_filtered(PyGObject *self, PyObject *args,
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PyObject *kwargs)
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{
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static char *kwlist[] = { "srcpadname", "dest", "destpadname",
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"filtercaps", NULL };
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char *srcpadname, *destpadname;
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PyGObject *dest;
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int ret;
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PyObject *py_filtercaps;
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GstCaps *filtercaps = NULL;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs,
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"sO!sO:GstElement.link_pads_filtered",
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kwlist, &srcpadname, &PyGstElement_Type,
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&dest, &destpadname, &py_filtercaps))
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return NULL;
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if (pyg_boxed_check(py_filtercaps, GST_TYPE_CAPS))
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filtercaps = pyg_boxed_get(py_filtercaps, GstCaps);
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else {
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PyErr_SetString(PyExc_TypeError, "filtercaps should be a GstCaps");
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return NULL;
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}
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ret = gst_element_link_pads_filtered(GST_ELEMENT(self->obj), srcpadname,
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GST_ELEMENT(dest->obj), destpadname,
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filtercaps);
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if (!ret) {
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PyErr_SetString(PyGstExc_LinkError, "link failed");
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return NULL;
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}
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return PyBool_FromLong(ret);
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}
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%%
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override gst_element_unlink_many args
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static PyObject *
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_wrap_gst_element_unlink_many(PyObject *self, PyObject *args)
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{
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PyGObject *element, *element2;
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int i, len;
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len = PyTuple_Size(args);
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if (len < 2)
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{
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PyErr_SetString(PyExc_TypeError, "gst.element_unlink_many requires at least two arguments");
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return NULL;
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}
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for (i = 0; i < len; i++)
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{
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element = (PyGObject*)PyTuple_GetItem(args, i);
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if (!pygobject_check(element, &PyGstElement_Type))
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{
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PyErr_SetString(PyExc_TypeError, "argument must be a GstElement");
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return NULL;
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}
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}
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/* Mimic the real gst_element_unlink_many */
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element = (PyGObject*)PyTuple_GetItem(args, 0);
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element2 = (PyGObject*)PyTuple_GetItem(args, 1);
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i = 2;
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while (1) {
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gst_element_unlink(GST_ELEMENT(element->obj), GST_ELEMENT(element2->obj));
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if (i >= len)
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break;
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element = element2;
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element2 = (PyGObject*)PyTuple_GetItem(args, i);
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i++;
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}
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Py_INCREF(Py_None);
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return Py_None;
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}
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%%
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override gst_element_send_event kwargs
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static PyObject *
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_wrap_gst_element_send_event(PyGObject *self, PyObject *args, PyObject *kwargs)
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{
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static char *kwlist[] = { "event", NULL };
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PyObject *py_event;
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int ret;
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GstEvent *event = NULL;
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if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O:GstElement.send_event", kwlist, &py_event))
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return NULL;
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if (pygstminiobject_check (py_event, &PyGstEvent_Type)) {
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event = GST_EVENT (pygstminiobject_get (py_event));
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} else {
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PyErr_SetString(PyExc_TypeError, "event should be a GstEvent");
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return NULL;
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}
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/* The pipeline unrefs the event, but we want to keep the ownership */
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gst_event_ref(event);
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ret = gst_element_send_event(GST_ELEMENT(self->obj), event);
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return PyBool_FromLong(ret);
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}
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%%
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override gst_element_query_position args
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static PyObject *
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_wrap_gst_element_query_position (PyGObject *self, PyObject *args)
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{
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gint64 cur;
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gint format;
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PyObject *pformat;
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PyObject *ret;
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pformat = (PyObject*)PyTuple_GetItem(args, 0);
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if (pyg_enum_get_value (GST_TYPE_FORMAT, pformat, &format)) {
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PyErr_SetString(PyExc_TypeError, "argument should be a GstFormat");
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return NULL;
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}
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if (!(gst_element_query_position(GST_ELEMENT (self->obj), (GstFormat*) &format, &cur))) {
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PyErr_Format(PyGstExc_QueryError,
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"query failed");
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return NULL;
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}
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ret = PyList_New(2);
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PyList_SetItem(ret, 0, PyLong_FromLongLong(cur));
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PyList_SetItem(ret, 1, pyg_enum_from_gtype (GST_TYPE_FORMAT, format ));
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return ret;
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}
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%%
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override gst_element_query_duration args
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static PyObject *
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_wrap_gst_element_query_duration (PyGObject *self, PyObject *args)
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{
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gint64 cur;
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gint format;
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PyObject *pformat;
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PyObject *ret;
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pformat = (PyObject*)PyTuple_GetItem(args, 0);
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if (pyg_enum_get_value (GST_TYPE_FORMAT, pformat, &format)) {
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PyErr_SetString(PyExc_TypeError, "argument should be a GstFormat");
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return NULL;
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}
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if (!(gst_element_query_duration(GST_ELEMENT (self->obj), (GstFormat*) &format, &cur))) {
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PyErr_Format(PyGstExc_QueryError,
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"query failed");
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return NULL;
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}
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ret = PyList_New(2);
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PyList_SetItem(ret, 0, PyLong_FromLongLong(cur));
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PyList_SetItem(ret, 1, pyg_enum_from_gtype (GST_TYPE_FORMAT, format ));
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return ret;
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}
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%%
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override gst_element_query_convert kwargs
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static PyObject *
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_wrap_gst_element_query_convert (PyGObject *self, PyObject *args, PyObject *kwargs)
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{
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static char *kwlist[] = { "fromformat", "fromvalue", "destformat", NULL };
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PyObject *pfromformat, *pdestformat;
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GstFormat srcformat, destformat;
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gint64 fromval, dstval;
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PyObject *ret;
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/* Input : src_format, src_val, dst_format */
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/* Returns : dst_format, dst_val OR None */
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if (!PyArg_ParseTupleAndKeywords(args, kwargs,
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"OLO:GstElement.query_convert",
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kwlist, &pfromformat, &fromval, &pdestformat))
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return NULL;
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if (pyg_enum_get_value(GST_TYPE_FORMAT, pfromformat, (gint *) &srcformat)) {
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PyErr_SetString(PyExc_TypeError, "argument should be a GstFormat");
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return NULL;
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}
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if (pyg_enum_get_value(GST_TYPE_FORMAT, pdestformat, (gint *) &destformat)) {
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PyErr_SetString(PyExc_TypeError, "argument should be a GstFormat");
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return NULL;
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}
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if (!(gst_element_query_convert (GST_ELEMENT(self->obj),
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srcformat, fromval,
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&destformat, &dstval))) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = PyList_New(2);
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PyList_SetItem(ret, 0, pyg_enum_from_gtype (GST_TYPE_FORMAT, destformat));
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PyList_SetItem(ret, 1, PyLong_FromLongLong(dstval));
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return ret;
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}
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%%
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override gst_element_get_query_types noargs
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static PyObject *
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_wrap_gst_element_get_query_types (PyGObject *self)
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{
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PyObject *ret;
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PyObject *item;
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int i;
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GstQueryType *tab;
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tab = (GstQueryType*) gst_element_get_query_types(GST_ELEMENT(self->obj));
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if (tab == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = PyList_New(0);
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for (i = 0; tab[i] != 0; i++) {
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item = pyg_enum_from_gtype (GST_TYPE_QUERY_TYPE, tab[i]);
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PyList_Append(ret, item);
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}
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return ret;
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}
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%%
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override-slot GstElement.tp_iter
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static PyObject *
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_wrap_gst_element_tp_iter(PyGObject *self)
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{
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return _wrap_gst_element_iterate_pads(self);
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}
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